Comportamento de zinco e manganês de pilhas alcalinas em uma coluna de solo

Abstract

Recebido em 14/7/05; aceito em 27/1/06; publicado na web em 14/6/06 BEHAVIOR OF ZINC AND MANGANESE FROM ALKALINE BATTERIES IN A SOIL COLUMN. The aim of this study was to evaluate the behavior of Zn and Mn in a soil column. Two soil columns were sampled, and four opened alkaline batteries were placed at the top of one soil column. An acid-rainwater solution (HNO 3 and H 2 SO 4 ; pH 4) was percolated through the battery contaminated column during one year. The results showed that the leaching of alkaline batteries caused enrichment of 70 and 11 times in the Zn and Mn concentration of the topsoil, respectively. Additionally, leaching of electrolyte (KOH) from the batteries increased the soil pH in the contaminated column.